1
sustain + noun (维持/支持某物)
及物动词，后接名词表示维持或支持某事物。
The economy needs to sustain its growth.
经济需要维持其增长。
维持；使持续
sustains — third person singular of sustain
先理解核心含义，再看它在真实句子里的用法。
维持；使持续
maintain; keep in existence
The economy needs to sustain its growth.
经济需要维持其增长。
维持；使持续存在。
To maintain, or keep in existence.
供养；滋养。
To provide for or nourish.
鼓励或批准(某事)。
To encourage or sanction (something).
遭受；经受(伤害等)。
To experience or suffer (an injury, etc.).
sustain
Base
原形
sustains
3rd person
第三人称单数
sustaining
-ing
现在分词
sustained
Past
过去式
sustained
Past participle
过去分词
This diet sustains energy levels.
这种饮食维持能量水平。
The team sustained their lead until the end.
团队一直保持领先直到结束。
She has sustained her interest in painting for years.
她多年来一直保持对绘画的兴趣。
规则动词，过去式和过去分词加-ed。常用作及物动词，意为“维持、保持”。
To sustain the project, we need more volunteers every week.
为了维持这个项目，我们每周需要更多志愿者。
She sustained her enthusiasm for years by always learning something new.
她通过不断学习新东西，多年来一直保持着热情。
Regular exercise sustains your energy and improves your mood.
经常锻炼能维持你的精力，并改善你的情绪。
及物动词，后接名词表示维持或支持某事物。
The economy needs to sustain its growth.
经济需要维持其增长。
常用于法律或医疗语境，表示遭受伤害或损失。
He sustained a serious injury in the accident.
他在事故中遭受了重伤。
被动语态，强调维持的来源。
The organization is sustained by donations.
该组织由捐赠维持。
Not this
The sustain of the economy is crucial.
Use this
The sustainability of the economy is crucial.
这里误将动词「sustain」当作名词使用，其名词形式应为「sustainability」（可持续性）。「sustain」作动词时意为「维持、承受」，而名词形式需根据语境选择「sustainment」或「sustainability」。
Not this
He maintained a serious injury during the accident.
Use this
He sustained a serious injury during the accident.
「maintain」表示「保持、维护」，而「sustain」表示「遭受、承受」。描述受伤时应用「sustain」，是固定搭配。汉语中「维持」与「承受」语义不同，导致学习者混淆这两个动词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
维持生命
Food and water are essential to sustain life.
食物和水对于维持生命至关重要。
遭受损害
The building sustained heavy damage in the earthquake.
这座建筑在地震中遭受了严重破坏。
保持增长
The company aims to sustain growth in the coming years.
该公司旨在未来几年保持增长。
保持兴趣
The speaker used stories to sustain the audience's interest.
演讲者用故事来保持观众的兴趣。
支持主张
The evidence was insufficient to sustain the claim.
证据不足以支持这一主张。
受伤
He sustained a knee injury during the match.
他在比赛中膝盖受伤。
维持生命
Water is essential to sustain life.
水对于维持生命至关重要。
受伤
He sustained a minor injury during the game.
他在比赛中受了轻伤。
保持势头
The team needs to sustain its momentum to win.
团队需要保持势头才能获胜。
Use sustains naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记住 sustain 像在下面(sus)抓住(tain)不放，支撑维持。
通常用于正式或书面语境，表示维持、保持或支持。
及物动词，后面直接跟宾语。
Dictionary facts from ECDICT, WIKTIONARY.